13122173 has 4 divisors (see below), whose sum is σ = 13442268. Its totient is φ = 12802080.

The previous prime is 13122169. The next prime is 13122191. The reversal of 13122173 is 37122131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3892729 + 9229444 = 1973^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122173 - 2² = 13122169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159986 + ... + 160067.

It is an arithmetic number, because the mean of its divisors is an integer number (3360567).

Almost surely, 2^13122173 is an apocalyptic number.

It is an amenable number.

13122173 is a deficient number, since it is larger than the sum of its proper divisors (320095).

13122173 is an equidigital number, since it uses as much as digits as its factorization.

13122173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320094.

The product of its digits is 252, while the sum is 20.

The square root of 13122173 is about 3622.4540024685. The cubic root of 13122173 is about 235.8677620272.

The spelling of 13122173 in words is "thirteen million, one hundred twenty-two thousand, one hundred seventy-three".